⟁ California Well Data field records · 2026 survey

California Well Data › Stanislaus County

Stanislaus County, California: well depth, water level & drilling cost

✓ 16,656 DWR records · verified 2026-08-14

200 ftmedian well depth
140 ft–280 fttypical depth range
53 ftmedian static water level
1,500 gpmmedian yield (1,279 tests)

How deep are wells in Stanislaus County, California?

The median drilled well depth in Stanislaus County is 200 ft, based on 13,170 wells with recorded depths in the state DWR database. Half of all wells fall between 140 ft and 280 ft; 90% are shallower than 400 ft. Wells drilled since 2016 have a median depth of 260 ft.

How much does it cost to drill a well in Stanislaus County?

Applying published per-foot rates to the local median depth of 260 ft: drilling and casing alone typically runs $6,500–$16,900; a complete system including pump, pressure tank, and hookup typically runs $15,600–$26,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Stanislaus County?

The median static water level is 53 ft below ground surface (middle half of wells: 27 ft–82 ft), from 9,145 measurements.

How much water do wells in Stanislaus County produce?

The median tested yield is 1,500 gpm (middle half: 300 gpm–2,500 gpm), from 1,279 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 133 50–100 ft 829 100–150 ft 2,996 150–200 ft 2,608 200–300 ft 3,733 300–400 ft 1,526 400–600 ft 1,027 600+ ft 318

Who drills wells in Stanislaus County?

Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).

DrillerWells since 2016
MASELLIS DRILLING INC778
CALWATER DRILLING COMPANY INC340
HENNINGS BROS DRILLING CO INC119
CANEPA AND SONS INC99
CASTLE WELL DRILLING INC60
CASTLE CONSTRUCTION & WELL DRILLING INC44
LIVING WATER WELL DRILLING28
MAGGIORA BROS DRILLING INC22

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Method: medians computed from DWR records (filed well completion reports, water-supply uses only (destruction, repair and monitoring wells excluded); depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.